Levoit 6.2L Smart Humidifier: 6.2 l tank, 62 hours per fill

Why it matters

The Levoit 6.2L Smart Humidifier is an ultrasonic humidifier with a 6.2 l tank, rated for 536 square feet.

Run time per fill, per the maker: 62 hours.

Aim for 40 to 60 percent relative humidity indoors: drier air irritates airways and skin, wetter air feeds dust mites and mold. Use distilled or demineralized water to avoid the white mineral dust ultrasonic mist leaves behind.

The listing names app control.

A full tank holds about 6.2 liters, which adds roughly 14 pounds of water to carry or lift to the sink and back.

Spread over 62 hours, that tank works out to about 100 milliliters an hour, the rate on the setting the run time was measured at; higher settings empty it faster.

Its tank of 6.2 liters is above the middle of the range we cover: 61 of the 78 humidifiers with a stated figure come in lower, and the range runs from 0.7 liters to 20.1 liters.

Its stated run time of 62 hours is one of the longest run times we cover: 59 of the 69 humidifiers with a stated figure come in lower, and the range runs from 10 hours to 130 hours.

Price-wise it sat in the middle third of the 74 ultrasonic models we cover when we checked; the button shows today's price.

It qualifies for our lists Best Humidifiers for Large Rooms, Best Cool Mist Humidifiers, where it is ranked against every model that meets the same rule.

Compared with the Levoit Superior 6000S Smart Evaporative Humidifier: rated room size 536 square feet here vs 3,000 sq ft; tank 6.2 l here vs 6 gallons; run time 62 hours here vs up to 72 hours.

Who it's for, and who should skip it

Good fit if

Large living rooms and open plans
Owners who will clean it weekly

Look elsewhere if

Rooms far larger than its rating

Pros and cons

Pros

6.2 l tank
Runs 62 hours per fill
Rated for 536 square feet

Cons

Needs regular cleaning to stay hygienic
Ultrasonic mist leaves white dust with hard water

Limitations to weigh

The Levoit 6.2L Smart Humidifier listing states every figure we compare on; they are the seller's numbers, measured on the setting it chooses.

Specifications

The bracket shows where each figure comes from.

Model number	LUH-N651S-WUS	Retailer
Room coverage	536 square feet	Retailer
Noise (seller)	26 dB	Retailer
Wattage	30 watts	Retailer
Capacity	6.2 liters	Retailer
Run time per fill	62 hours	Retailer
Tank capacity	6.2 l	Retailer